↑Gray, J. E. (1869) Sphenodon, Hatteria, and Rhynchocephalus., Ann. Mag. Nat. Hist. (4) 3: 167-168
↑ 3.03.1Gray, J.E. (1842) Description of two hitherto unrecorded species of reptiles from New Zealand; presented to the British Museum by Dr. Dieffenbach. In: J.E. Gray, The Zoological Miscellany. Part 2., pp. 57-72., Treuttel, Würtz & Co., London.
↑ 4.04.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)